Type-writing machine.



M. w. PooL. TYPE WRITING MACHINE. LPPLIUA'HDN imm un e, 1911.

' f Patented May 27, 1913.

' 4 sums-snm 1.

INVENTUR H'iEAT-TDRNEY S \\M\ \3M g JNM. v s. m Ew N z s s .3 WWE. S a l s Q w c.. IL..

.I M. W. P001.. TYPE WRITING MACHINE.

'APPLIUATION FILED MAY 6, 1911.

Patented May 27, 1913.

4 SHEETS-Banni' 2.

'WATNEEEEE lNvENTDR m Z724WMME/ HEATTDRNEY FIGS.' Y

M. W. POOL.

TYPE WRITING MAGHINB.

APPLICATION FILED MAY 6, 1911.

Patented May 27, 1913.

4 SHEETS- SHEET 3.

WaTNESSES. inn/ENTER.

I-IIEATTDFQNEv M. WQ POOL.' TYPE WRITING MACHINE. APPLIGATIQN HL@ MAY s, 1911.

' Patented Mayzv, 1913:

4 SHEETS-SHEET 4'.

INVENTQR:

Y l-llEA-VTRNEY UNTTED sTTATEs PATENT oEEIcE. i

MORRIS W. POOL, 0F NEW YORK, N. Y., ASSIG-NOR, BY MESNE ASSIGNMENTS, TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

To all whom it may concern: f Y

Be it known that I, Monats W. PooL, citizen of the United States, and resident of the boroughof Brooklyn, city o-f New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Type-VVriting Machines, of which'the following is a specification.

invention relates to case shift-ing mechanism for typewriting machines and its object is to provide a. caseshift mechanism which is certain and effective in operation and wherein vibration and noise are reduced to a minimum.

To the above and other ends my invention consists in Ythe features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1` is a front elevation, partly in section, of so much of a typewriting machine-as is necessary to illustrate my invention. Fig. 2 is a central, vertical, front to rear rsectional view of said machine. Fig. 3 is a front elevation, partly in section, o-f a typ'ewriting machine illustrating another form of my invention, parts ofthe machine being omitted. Fig. 4 is a verti'cal front to rear sectional view of the machine shown in Fig. 3.

In Figs. 1 and 2 I have illustrated my invention as embodied in mechanism for shift-` ing a platen While in Figs. 3 and 4 I have Vshown my invention applied to av machine wherein the types are shifted to change case.;

Referring first to Figs. land 2, the main' frame of the machine comprises a base 1, posts 2 and a to-p plate 3. Key levers 4 are fulcrumed in the base and each is connected by devices comprising a link 5 with a type bai" 6 which is provided with two types, an upper case type and a lower case-type, the latter being normally operative. Each type bar is pivotally supported on a hanger 7 secured to a stationary support or element '8 and the types are adapted to coperate with the front face of a cylindrical platen 9 having an axle 10 terminating in finger Wheels 11. The end portions of the axle pass through vertical slots 12 in the side bars 13 of a rectangular carriage truck which further comprises front and rear bars 14'and 15 grooved to cooperate with anti-friction balls 1G, said balls being also seated in coriesponding grooves formed in front and rear Specification of Letters Patent.

TYPE-WRITIN G MACHINE.

Patented May 27, 1`91`3.

Application'aled May e, 1911. serial No. 625,482.

track-ways o1' guide rails numbered respectively 17 and 18, said track-ways being secured to standards 19 rising from the top plate. Inside the bars 13 the aXle'lO bears in and is supported by upright-s 2O which are connected at their lower ends by a cross bar 2l, the uprights and cross bar comprising a shiftable platen frame or carrier, and said carrier, together with the carriage truck, comprising a carriage which is adapted to move back and forth from side to side of the machine above the`top plate under the control of ar spring drum and escapement devices of suitable character not herein shown.

A wheel or roller 22 is supported at the middle ofthe cross bar 'and runs on a shift rail or bar 23, being prevented from accidental displacement from said shift rail by a hook 24 which curves around the under side of the rail and is secured to the cross bar 21. The construction issuch that the roller 22 may run freely along` the shift rail 23 during letter space and return movements of the carriage; but at all times and especially when the platen frame 20, 21 is 'shifted up and down on the truck 13, 14, 15 to change case as presently to be described, the

roller 22 and the hook 24 will coperate to prevent displacement of the platen frame transversely of the shift frame comprising the shiftrail 23. The ends of the shift rail 23 are secured to the tops pf vertical rods 25 which are adapted to slide in lugs 26 pro-` jeeting forwardufrom upright .stationary standards 27. The lower ends of the' slide rods 25 are connected by a cross bar 28. The cross bar 28, slide rods25 and shift rail 23 constitute a platen shifting frame or supporting element. The standards 27`are connected at their upper ends by a cross bar 29 and at their lower ends by a cross bar 30. The cross bars 29 at'nd .30 and the standards 27 constitute a detachable support which is rigidly secured by screws 31 tothe side frames of the base 1.

As herein embodied my invention comprises opposing toggles which are operative concurrently, one toggle straightening and shifting the platen upward and the other concurrently breaking to permit thismovement.; and vice versa. The upper toggle` comprises a toggle ar' 32 pivoted at its.` upper end at 33 to the niddle ofthe sta-` tionary cross bar 29 and further comprises the stationary cross bar 30. The upper tog-- gle 32, 34 is controlled by a push and pull rod 41 pivoted at. 36 at its inner end and.

extending laterally rightwerd, the outer end of the rod 4l being pivoted at 42 to the upper arm of a three-armed lever 43 fulcrumed :it 44 to a standard 45 integre-l. with and rising from the cross bai' 30 near thev /--rl"rhthand end thereof. The lower toggle 37, 39`is 4controlled by a push and pull rod 46 pivoted at one end to the toggle at 38 and at the-'other end e154? to the lower arm ofL I n consequently shifts the shiftable `frame or elethe lever 43. 4 v

As appears clearly from Fg.2 .the upper end of the toggle arm 34 is biurcated to embrace the lower end of the toggle arm 32, "f

and the inner end of the cross rod 41 is also bifurcated to embracethe two toggle arms 32 and 34 attheir point of connection. 'The pivot member or pin 36 passes through the bifurcations of 4l and 34 as Well as through the lower end-of the arm 32 which comy prises only e single ply or thickness of metal. The upper end of the toggle arm 37 is bifurcated to embrace the lower end of the arm 34, and the screw pivot which con# nects the arms 34 and 37 to the shift bar 28 passes through the three plies and screws into the bar 28. Thevlower pivot pin or member 38, similarly tothepper pin 36, passes through ive plies comprising the bifurcated inner end of therod 46 which embraces the toggle arms 37 and 39, the upper end of the arm 39 in turnbeing bifurceteol to-embrace the .lower end of the arm 37 which is a. single ply. s The lever 43 is adapted to be rocked to break and straighten the toggles alternately by devices comprising s link 48, the upper end ofwhichis pivotelly connected to the shortlaterally extending' erm 43 or' the lever 4 3. The lower end of the link 48 is connected to a key levee? 4-l-wl1ich is fulcrumed on o.A ulcrum ber secured to the base 1. The .lever 49 is provided with a restoring spring 5l and has pivoted et 52 to its front end a key stem 53 terminating at its upper end in it key or finger button 54 and at its lower enclin u hook 531 which yis adapted 'to engage a stationary bracket 55 secured to the buse l. Arstop pin 56 on the key lever 49 limits rearward movement of the upper arm of the key stem 53.

Assuming that the ports are normally in the relationship shone in Figs. 'l and 2, it will be observed that the upper toggle 32, 34 is straight, its erms being vertically disposed,

y Loes/72s' while the lower vtoggle 3'?, 39 is brflren. .The straight upper toggle is anchored or gied et its upper end it 33 und consequently will nmintoin tbe shi'. able cross bar 28 to which it is pivotaillj." connected at 85 in :i fixed predetermined position, thus controlling- .the

platen shifting freine or. element 23, '25,28 and maintaining or holding; the platen in proper position to coact with the lower case types. When it is desired to change case the platen is shifted by depressing thelrey 54, thus swinging down the lever 49 and lowering the link 48 which in turn operates on the erm 43a to swing the lever 43 fromthe full line to the dotted line position of Fig. l. the rod 4l rightward and pushes the rod 46 leftward, breaking the toggle 32., 34 and straightening the'tog'gle 37, 391. rlhis latter operation raises the vpivotal .point 35 and toggle 3?', 89 is straight, the platen will be in upper cese position.v Gn releasing the key 54, the ports will be restored to the full line position of sig. lby 'gravity after the toggle has been broken by the spring 51. If it is desired to loclr the platen in upper caseposition the key 54, after it has been depressed, is pulled or pressed forward to lock theA hook 53'* under the bracket 55 as shown by dotted lines Yin Fig. 2.

lt will be observed that by the use of two toggle devices as described, the stops eommonlv employed for limiting the shifting movements of the case-shifting element, Whether platen or typeber support, may be dispensed with, and the vibration incident to the sudden contactof the stop devices, es well os the noise caused thereby, is practicslly eliminated. The toggles are easy and certain in operation, and whenconstructed as described, operate to hold .the platen rigidly either in its lower or upper case position.

Figs. 3 and 4 show e machine of the shifting type basket style, the mein freine whereof eomprifl e. bose 5l', posts 58 and s top plate l.-bove which is arranged o. platen 60 diegzeznmsticelly illustrated, said platen being adopted to move horizontally back and forth over tbe top for letter specing but being of the non-shifting style. The type bars 61 are `erich provided with e. low er cese type end an upper cose type and ere pivotally supported on hangersV 62 vsecured to the front face of e shiftable segment 63, the segment being provided at its upper end with laterally extending lugs 64 wir- 'o are perforated to engage and beer on stationary guide rods 55, said guide rods being fixed to depending from the top plate 59. Luge G6 project laterally from the segnient 65 below the lugs 64, seid arms 85 be- This movement of the lever 43 pulls.

is'o

ing perforated to engage and bear on the guide rods 65. The ltree ends of the type bars are supported on a curved rest 67 which is secured to the forward ends of arms 68 extending horizontally from the segment 63 and secured thereto by screws 69, the parts (53 and 68 being in rigid relationship and constituting a supporting elementk for the type bars. In this construction the upper toggle comprises arms 70r and 7l pivo-tally connected at 72. The upper arm 70 is pivoted at T3 to a lug 74 depending from the top plate while the lower arln 7l`is pivoted at 75 to the rear of the segment G3 and at the middle thereof. The lower toggle is composed of arms 7G and 77 pivotally connected at 78. the upper arm 76 being pivoted to the segmentat Tnand the lower arm being pivoted atA 79 to a stationary cross bar SO which extends transversely of the base and is secured at its ends to the side portions thcreo-t. Parallel controlling rods titi Jai

l and 82 are pivoted at their inncrends respectively at 72 and 7S, the outer ends of saidv rods being pivoted respectively at 83 and S; to the ends of a ,lever 8F which is tulcruined at S56 to a. standard S7 rising from the cross bar SO, and has an arm or projection 85 connected by a link SS with a key lever 89 having a stationary fulcrum 90 at its rearend. The forward end of thel 'lever has a horizontal slot 91 which is engaged by a :pin 92 on a rocker 93 pivoted at tto a. lug 95 on the base 57. The rocker is provided with angula-rly disposed keys or ringer buttons 96 and 97 at opposite sides of the pivotl. In the normal lowercase position the upper toggle-70, 71v is straight while the lower toggle 7G, 77 is broken.' ly pressing the key Siti the rocker 93 and lever SS) swung trom the fulliline position ot' Fig. 2t to the dotted line positions shown therein. This operation pulls down the link anti swings the lever 85 on its tulcrum.'r polling the rod S1. right 'ard and pushing the rod 82 lettward. This movement of the rod breaks the toggle 70, 7l and cancun sraightens or makes the toggle 7f3. he straightening ot the toggle 7G, 77 'ses the type bar segment (33, said segment sliding op on the guide rods (35 until. when arresti-fl by the straightened toggle 7G. 7i', it will be in upper case position. so that the tjr-'pr hars when actuated willprint from the capital or upper case types'.

in the Figs. .qi-4 construction no restornj ing is provided and consequently the j.' vr.ar segment and type hars will remain n upper case ps'fsition, being held therein j; the straight toggle T6. 77, in orderA to 'i-tnrn to lower case position it is necessary press the key ill which will rock the '93 back to the full line position ot rod lift the leven'Sfl. It will be ap` hat the angular disposition of the`4 keys 96, 97 is such that if the shifting movement is to be temporary'only, as forv the insertion of a single letter or character, the operator may conveniently press the key 96 with the tip of the finger and shift the segment to uppercase position, and then by practically thesame `operation in removing the finger from the key-9G draw the under side of the linger downward against the key 97 to restore the parts tol lower case position. It preferred, however, the key construction shown in Figs. land E2 may be employed, or any other suitable manual devices for operating the toggle mechanism may loe provided.

Various changes may be made without departing-from my invention.

lV hat claim as new and desire to secure by Letters Patent, is il. In a typewriting machinethe combination et' an element shiftablo to change case, and means tor shifting said element comprising opposing togglesi one or the other of said toggles constantly supporting said shiftable element.

2. Case shift mechanism for typewriting machines comprising the combination of a plurality of toggles, and /means for operating said togglesin altori'iation to`efieet the case shitting operation.

3. Case shift mechanism tor tyi'iewriting machines comprising the combination of a plurality ot ioggles, and means controlled by a single key for breaking one toggle and concurrently straightening another ti'iggle.

4.5 ln a t'ypeu'riting machineg the combination with a platen. and a .sol ol type bars, the platen and type oars being relatively movable. to change ras-c. ot moans tor etiiecting such reiatire maremma', said means comprising two togglvs opi'iositcly acting. and hand means tor at.\\'ill controlled straightening and ybreaking said toggles.

Aina typewriting machine. the combination ot a platen supporting element. a type bar supporting element, one et' said elements being shit't'able to change case, a toggle for shitting said shittabie element in one directioin and a second toggle for shifting said shiltable cit-ment in the opposite direction.

(l. In a typeu'ritiug machine, the combination of a platen sul'iporting element, a type' bar supporting elcmex'it, one of said elements being shittablo to "change casegi'atoggle 'for shitting said shitta'ble element in* one directitn, a second toggle for' shittiugsai l shiftable element in the opposili` direction, and means tor operating said t-'gglrs aitreruatrig.

i 7. in a typewriting machine` thorombina- Y-tion ot a platen supporting elemen` a typr lnirsupporting element, one ot said eiements being shi'ftablo to change case, and ltey ai tuated duplex sets of shifting devicesgsaid sets being connecten and oppositely acting, one set. for shitting the shittahle element to change case, and the other set for restoring the shiftable element t-o'and maintaining it "in its original position.

8. ln a typewriting machine, the combination of a platen supporting element, a type bar supporting element, one of said elements being shiftable to change case, a toggle hav having a iXed pivot, one of said toggles bevin normally straight and supporting said shiftable element.

9. Ina typeWrit-ing machine, the combination of a platen supporting element, a type bar supporting element, one oi said elements being shiftable to change case, a toggle having one of its arms pivoted to said sliit'table element., the other arm of said toggle having a fixed pivot, second toggle having one of its arms pivoted to said shiftable element, the other arm of said "second toggle having a ixed pivot, and means for operating said togtgles4 alternately to shift said shittable ele ment back and forth in opposite directions.

10.k In a typenriting machine, the combination of a platen supporting element, a type bar supporting element, one of said elements being shiftable to change case, a toggle having one of its arms pivoted to said shiftable element, the other arm of said toggie having a fixed pivot, a second toggle having one of its arms'pivoted to said shiftable element ithe other arm of said second toggle having a fixed pivot, and means for operating said toggles comprising push and pull rods, one for each toggle, and a key controlled lever to which said push and pull rods are connected.

1i. ln a typewriting machine, the combination of a platen supporting element, a type bar snpporting'element, one oit said elements being shiiitable tochange case, a toggle having-one of its. arms pivoted to said shiftablo element, the other arm of said toggie having a lined pivot. a second toggle having one ot its arms ifiivoted to said shift able element, the other arm ot' said second toggle having a ixed pivot, and means for operating said toggles comprising a lever connected to both toggles, and lteyvoperated devices for moving saidelever in opposite directions.

l2.' na A'tuant-strike typewriting machine. the combination of a platen supportingele-l mente tjvpe bar supporting element, one ot' ascenso said elements being shiftable up and down, a-,toggle connected to said shitable element, the. arms of said toggle being normally substantially vertical, and a second togglefconnected to said shittable element, the arms of said second toggle being angularly disposed normally.` f l 13. In a front-strike typewritin machine, the combination of a platen, a shi table type bar segment, atoggle connected to said se ment., the arms of said toggle beingnormal y substantially vertical, and a second toggle connected to said segment, the arms of said second toggle being angnlarly disposed normally.

14. In a front-strike typcwriting machine, the combination of a platen, a type bar segment, a pluralitj,7 of toggles connected to said segment, operating rods, one for each toggle. a rocking lever to Which said operating rods are connected, and a key lever connected to said rocking lever.

15. In a front-striketypewriting machine, the combination of a platen supporting element, a type bar supporting element, one of said elements being shittable to change case, a toggle operative when straightened to raise said shiftable element and hold it. fixed in .raised position, and a second toggle operative when straightened to'lower said shiftable element and hold it fixed in lowered position.

16. ln a frcntestrike typewriting machine, the combination of a platen supporting elenie'nn'a type bar supporting element, one of said elements being shiftable to change case, a toggle o'ierative when straightened to move said shiftable element to upper case aesition. and a s arin T for breaking said ,to

gle and assisting to restore the parts to nor mall' lower case position.

1'?. In a frontstrilte t-ypewriting machine, the combination of a platen supporting element, a type bar supporting element, one of said elements being shiftable to change case, a toggle operative *.vhen straigtened to move said shii'table element to upper case position, key connect-ions to said toggle, and a spring operative through said connections to break said toggle.

Signed at the borough of Manhattan, city of New York. in the county of New York, and State of lf this 5th dayof May A, D. ieri.

Meer; is W. Poot.

it' itn esses:

Contes of this patent may be obtained for` each. 'uy addressing t'ne i ozxii'xissionor of Yalens 

